Describe:Bluetooth 5.0, intelligent noise reduction, IPX5.The sound conduction technology transmits sound to the auditory nerve through the skull and, with strong low frequency, delicate middle frequency, and high frequency penetration.Three- equalization, large coil unit, full and HIFI- sound quality experience.Ergonomic design makes it more firm to wear, stable in, and unlimited in.Built-in 180 mAh battery, can listen to songs continuously for 13 hours, battery with protection board, better battery life.Lightweight body design, long-term wear does hurt, how young can be restrained, exercise as you like.Connect in second, intelligently identify environmental noises, and clear voices.The memory titanium alloy frame is adapted according to different sizes, and the shape is arbitrarily twisted, with constant twists and turns.Fully enclosed sound chamber prevents daily sweat and rainwater from infiltrating, easy-to-clean, and simply wipe it to give it a .It is suitable for, Android, and other systems, as long as the device has Bluetooth.Size: 10.6*16.5*1.7cm Include:1*headphone1*Data cable1*Instruction